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Finding the Fourth Proportional to 6,653,811.84, 9,978,946.56 and 1,861,203.84

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Solution

The fourth proportional to 6,653,811.84, 9,978,946.56 and 1,861,203.84 is: 2,791,310.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,653,811.84 : 9,978,946.56 = 1,861,203.84 : x
  2. Step 2: Convert to fraction form
    6,653,811.84/9,978,946.56 = 1,861,203.84/x
  3. Step 3: Cross multiply
    6,653,811.84x = 9,978,946.56 × 1,861,203.84
  4. Step 4: Simplify right side
    6,653,811.84x = 18,572,853,656,626.79
  5. Step 5: Solve for x
    x = 18,572,853,656,626.79/6,653,811.84
  6. Step 6: Final answer
    x = 2,791,310.32

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.